Hi, I had my nine week old daughter on Infacol with no success. Referred to a Paediatrician (sp!), he prescribed Zantac, and I am now able to put my daughter down during the day (previously could hardly have her on her back in comfort- but night sleeping was better than the day), she gets plenty of day sleep and will sleep thru the night more than ever. It took a couple of days to really help. Good luck.